[info] Using makefile-style concurrent boot in runlevel 2. [ 15.918458][ C1] random: crng init done [....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added '10.128.0.195' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 36.811409][ T12] usb 1-1: new high-speed USB device number 2 using dummy_hcd [ 37.051351][ T12] usb 1-1: Using ep0 maxpacket: 16 [ 37.171451][ T12] usb 1-1: config 0 has an invalid interface number: 183 but max is 0 [ 37.179903][ T12] usb 1-1: config 0 has no interface number 0 [ 37.186913][ T12] usb 1-1: New USB device found, idVendor=17ef, idProduct=480b, bcdDevice=eb.30 [ 37.196198][ T12] usb 1-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 37.206022][ T12] usb 1-1: config 0 descriptor?? [ 37.253797][ T12] INFO: trying to register non-static key. [ 37.259657][ T12] the code is fine but needs lockdep annotation. [ 37.266194][ T12] turning off the locking correctness validator. [ 37.273042][ T12] CPU: 0 PID: 12 Comm: kworker/0:1 Not tainted 5.4.0-rc1+ #0 [ 37.280470][ T12] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 37.291123][ T12] Workqueue: usb_hub_wq hub_event [ 37.296133][ T12] Call Trace: [ 37.299505][ T12] dump_stack+0xca/0x13e [ 37.303736][ T12] register_lock_class+0x1022/0x11d0 [ 37.309001][ T12] ? stack_depot_save+0x252/0x440 [ 37.314042][ T12] ? is_dynamic_key+0x1b0/0x1b0 [ 37.318868][ T12] ? mark_lock+0xbc/0x1160 [ 37.323290][ T12] __lock_acquire+0xfc/0x3b60 [ 37.327961][ T12] ? skip_atoi+0xab/0xe0 [ 37.332179][ T12] ? put_dec+0xd0/0xd0 [ 37.336220][ T12] ? format_decode+0x230/0xad0 [ 37.340957][ T12] ? mark_held_locks+0xe0/0xe0 [ 37.345707][ T12] ? enable_ptr_key_workfn+0x30/0x30 [ 37.350969][ T12] ? uvc_probe+0x18e/0x64e4 [ 37.355463][ T12] ? really_probe+0x281/0x6d0 [ 37.360207][ T12] ? driver_probe_device+0x104/0x210 [ 37.365494][ T12] ? __device_attach_driver+0x1c2/0x220 [ 37.371019][ T12] ? bus_for_each_drv+0x162/0x1e0 [ 37.376025][ T12] ? __device_attach+0x217/0x360 [ 37.380958][ T12] lock_acquire+0x127/0x320 [ 37.385471][ T12] ? ida_destroy+0xb0/0x3a0 [ 37.389964][ T12] _raw_spin_lock_irqsave+0x32/0x50 [ 37.395142][ T12] ? ida_destroy+0xb0/0x3a0 [ 37.399622][ T12] ida_destroy+0xb0/0x3a0 [ 37.404181][ T12] ? refcount_sub_and_test_checked+0x130/0x1c0 [ 37.410503][ T12] ? ida_alloc_range+0x7f0/0x7f0 [ 37.415706][ T12] ? uvc_delete+0x21/0x2f0 [ 37.420105][ T12] ? kobject_put+0x78/0x280 [ 37.424696][ T12] media_device_cleanup+0x15/0x70 [ 37.429706][ T12] uvc_delete+0x8e/0x2f0 [ 37.433947][ T12] uvc_probe+0xf95/0x64e4 [ 37.438263][ T12] ? __lock_acquire+0x145e/0x3b60 [ 37.443270][ T12] ? mark_lock+0xbc/0x1160 [ 37.447691][ T12] ? mark_lock+0xbc/0x1160 [ 37.452192][ T12] ? usb_probe_interface+0x305/0x7a0 [ 37.457468][ T12] usb_probe_interface+0x305/0x7a0 [ 37.462554][ T12] ? usb_probe_device+0x100/0x100 [ 37.467556][ T12] really_probe+0x281/0x6d0 [ 37.472061][ T12] driver_probe_device+0x104/0x210 [ 37.477161][ T12] __device_attach_driver+0x1c2/0x220 [ 37.482526][ T12] ? driver_allows_async_probing+0x160/0x160 [ 37.488495][ T12] bus_for_each_drv+0x162/0x1e0 [ 37.493328][ T12] ? bus_rescan_devices+0x20/0x20 [ 37.498333][ T12] ? _raw_spin_unlock_irqrestore+0x3e/0x50 [ 37.504137][ T12] ? lockdep_hardirqs_on+0x382/0x580 [ 37.509407][ T12] __device_attach+0x217/0x360 [ 37.514151][ T12] ? device_bind_driver+0xd0/0xd0 [ 37.519173][ T12] ? kobject_uevent_env+0x29e/0x1150 [ 37.524434][ T12] ? kobject_uevent_env+0x2a8/0x1150 [ 37.529957][ T12] bus_probe_device+0x1e4/0x290 [ 37.534876][ T12] ? blocking_notifier_call_chain+0x54/0xa0 [ 37.540742][ T12] device_add+0xae6/0x16f0 [ 37.545149][ T12] ? uevent_store+0x50/0x50 [ 37.549652][ T12] ? _raw_spin_unlock_irqrestore+0x3e/0x50 [ 37.555449][ T12] usb_set_configuration+0xdf6/0x1670 [ 37.560807][ T12] generic_probe+0x9d/0xd5 [ 37.565215][ T12] usb_probe_device+0x99/0x100 [ 37.570309][ T12] ? usb_suspend+0x620/0x620 [ 37.574950][ T12] really_probe+0x281/0x6d0 [ 37.579435][ T12] driver_probe_device+0x104/0x210 [ 37.584541][ T12] __device_attach_driver+0x1c2/0x220 [ 37.589986][ T12] ? driver_allows_async_probing+0x160/0x160 [ 37.596140][ T12] bus_for_each_drv+0x162/0x1e0 [ 37.601167][ T12] ? bus_rescan_devices+0x20/0x20 [ 37.606176][ T12] ? _raw_spin_unlock_irqrestore+0x3e/0x50 [ 37.611962][ T12] ? lockdep_hardirqs_on+0x382/0x580 [ 37.617265][ T12] __device_attach+0x217/0x360 [ 37.622099][ T12] ? device_bind_driver+0xd0/0xd0 [ 37.627099][ T12] ? kobject_uevent_env+0x29e/0x1150 [ 37.632372][ T12] ? kobject_uevent_env+0x2a8/0x1150 [ 37.637634][ T12] bus_probe_device+0x1e4/0x290 [ 37.642551][ T12] ? blocking_notifier_call_chain+0x54/0xa0 [ 37.648503][ T12] device_add+0xae6/0x16f0 [ 37.652900][ T12] ? uevent_store+0x50/0x50 [ 37.657553][ T12] usb_new_device.cold+0x6a4/0xe79 [ 37.663161][ T12] hub_event+0x1b5c/0x3640 [ 37.667573][ T12] ? hub_port_debounce+0x260/0x260 [ 37.672668][ T12] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 37.678186][ T12] ? rcu_read_lock_bh_held+0xb0/0xb0 [ 37.683544][ T12] process_one_work+0x92b/0x1530 [ 37.688457][ T12] ? pwq_dec_nr_in_flight+0x310/0x310 [ 37.693804][ T12] ? do_raw_spin_lock+0x11a/0x280 [ 37.698828][ T12] worker_thread+0x96/0xe20 [ 37.703337][ T12] ? pr